ASTROSAT CZTI

Data Quality Report

Orbit 36849

Creation date: 2024-06-27T21:32:20.476365
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_075T01_9000005244_36849cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36849cztM0_level2_quad_clean.evt
Size (bytes)356,247,36047,240,640
Size339.7 MB 45.1 MB
Events in quadrant A2,896,730346,806
Events in quadrant B886,2265,901
Events in quadrant C3,169,857343,383
Events in quadrant D3,442,049333,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122383
B058412
C0128172
D0141062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5702150.263066%
B57025702100.000000%
C5702631.104875%
D57021733.034023%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7285 5703 1 1 0.01% 0.02%
B 7284 5701 2 2 0.03% 0.04%
C 7285 5703 45 45 0.62% 0.79%
D 7285 5703 139 139 1.91% 2.44%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 254381 1886.25 657 643 134.5
A 7 192 42445 310.75 657 643 134.5
A 0 247 21747 156.88 657 643 134.5
B 12 243 788570 169613.4 14 13 4.6
B 12 144 14715 3162.3 14 13 4.6
B 0 213 11403 2449.91 14 13 4.6
C 15 214 247154 1654.38 636 640 149.0
C 0 10 208984 1398.22 636 640 149.0
C 14 254 183524 1227.35 636 640 149.0
D 13 171 453618 2884.07 635 617 157.1
D 2 250 83367 526.83 635 617 157.1
D 1 52 78068 493.1 635 617 157.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter